Dynacomp Build problem

[ranchak]

I just got done with the Dynacomp/Ross build from the Tonepad site. I ordered my parts and realized that I did not get my CA3080 (either didn't get shipped or got lost). I substituted a JRC4558 to see if my build worked. Well it doesn't, you can hear the signal faintly. I checked my readings and this is what I got (I think it's time for a new battery):

     Q1         Q2          Q3          Q4          Q5
C   8.77      6.68        8.70        8.66        8.76
B   1.968    2.653       0            0             8.66
E   1.479    2.077       0            0             8.27

Pin 1     1.46
Pin 2     4.44
Pin 3     4.42
Pin  4    0
Pin 5     8.23
Pin 6     2.652
Pin 7     8.76
Pin 8     7.85


There definately a problem with the voltage at Pin 5, this should be no where near this high. Also Pin 1 and 8 aren't used... would they have voltage at them? Any help would be appreciated.

[Johnny Guitar]

3080 is a different beast entirely to a 4558 (ota vs. an op amp). Replace it with a 3080 and reply back then.

[ranchak]

I'll check and see if Radio Shack has one and I will give that a try. Thanks.

[markm]

Ummmm...
You won't find one there. 
You'll have to try Smallbear, he's got 'em.